Year	scale 0 - 100
2004	75.83333300000001
2005	78.16666599999999
2006	77.66666599999999
2007	78.8333325
2008	78.33333299999998
2009	78.57142904761905
2010	81.1111119047619
2011	82.22222238095236
2012	81.58730047619048
2013	80.63492063492065
2014	79.52380952380953
2015	83.01590952380951
2016	82.22225714285713
2017	83.49209047619048
2018	84.60319999999999
2019	83.65081904761904
2020	82.06351428571428